MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


FormBook


Vendor detections: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755
SHA3-384 hash: cd69005948d3d1a36b3b884eae6d9362046b87349936efc0d96403c20e7e5fa3519eb8c1534b974b41b76e30ce4a2de4
SHA1 hash: 764b70bff833db766ec48667ea917ca1e7f79763
MD5 hash: a5d704e7b5f67ef6ab7e189eec4360ab
humanhash: december-music-autumn-lake
File name:a5d704e7b5f67ef6ab7e189eec4360ab.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:1'019'392 bytes
First seen:2022-06-20 14:09:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6bc49b119ffc99d9e27364e06b706e10 (3 x Formbook, 2 x AveMariaRAT)
ssdeep 24576:mArq7iX2O7Zo+r5E1kBiKvyJsPFtZd52EUAEc:m17+7rTPdtZ9Ec
TLSH T181259E62B391883BF17325789C1B6278592BBED32E3569466BEC2C4C1F772813835397
TrID 68.5% (.OCX) Windows ActiveX control (116521/4/18)
8.3% (.EXE) Win32 Executable Delphi generic (14182/79/4)
7.7% (.SCR) Windows screen saver (13101/52/3)
6.1% (.EXE) Win64 Executable (generic) (10523/12/4)
2.6% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon ccdc96879e88acf4 (4 x DBatLoader, 3 x AveMariaRAT, 3 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
227
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/281647/
Detection(s):
SecuriteInfo.com.Fareit-FDBIE0039F8AB05E.26284.15135.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Launching a process
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Creating a file in the %temp% directory
Searching for synchronization primitives
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/22062/overview
Behaviour
MalwareBazaar
CheckScreenResolution
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit keylogger packed
Link:
https://www.filescan.io/uploads/62b07fff3c1286f07352acc2/reports/bbb7df3e-4aea-4901-90f8-46e1995c4466/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ed3e4cd0-f8c3-430a-bfcf-1affb826ea94
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016372
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Detected FormBook malware
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected UAC Bypass using ComputerDefaults
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 648866 Sample: r1F3rnQA9u.exe Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 84 Snort IDS alert for network traffic 2->84 86 Malicious sample detected (through community Yara rule) 2->86 88 Antivirus detection for URL or domain 2->88 90 6 other signatures 2->90 10 r1F3rnQA9u.exe 1 19 2->10         started        15 Agutkhqvgh.exe 16 2->15         started        process3 dnsIp4 56 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49744, 49758 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 10->56 58 l-0004.l-dc-msedge.net 13.107.43.13, 443, 49741, 49749 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 10->58 66 3 other IPs or domains 10->66 48 C:\Users\Public\Libraries\Agutkhqvgh.exe, PE32 10->48 dropped 50 C:\Users\...\Agutkhqvgh.exe:Zone.Identifier, ASCII 10->50 dropped 120 Writes to foreign memory regions 10->120 122 Allocates memory in foreign processes 10->122 124 Creates a thread in another existing process (thread injection) 10->124 17 DpiScaling.exe 10->17         started        60 prichg.am.files.1drv.com 15->60 62 onedrive.live.com 15->62 64 am-files.fe.1drv.com 15->64 126 Multi AV Scanner detection for dropped file 15->126 128 Injects a PE file into a foreign processes 15->128 20 logagent.exe 15->20         started        file5 signatures6 process7 signatures8 74 Modifies the context of a thread in another process (thread injection) 17->74 76 Maps a DLL or memory area into another process 17->76 78 Sample uses process hollowing technique 17->78 80 Queues an APC in another process (thread injection) 17->80 22 explorer.exe 17->22 injected 82 Tries to detect virtualization through RDTSC time measurements 20->82 process9 dnsIp10 52 www.artisticliteracyproject.com 185.151.30.138, 49819, 49820, 49821 TWENTYIGB United Kingdom 22->52 54 www.accesskauairealty.com 45.86.60.138, 49814, 49815, 49816 DEDIPATH-LLCUS Netherlands 22->54 100 System process connects to network (likely due to code injection or exploit) 22->100 26 chkdsk.exe 18 22->26         started        30 Agutkhqvgh.exe 16 22->30         started        33 colorcpl.exe 22->33         started        35 2 other processes 22->35 signatures11 process12 dnsIp13 44 C:\Users\user\AppData\...\71Plogrv.ini, data 26->44 dropped 46 C:\Users\user\AppData\...\71Plogri.ini, data 26->46 dropped 102 Detected FormBook malware 26->102 104 Tries to steal Mail credentials (via file / registry access) 26->104 106 Tries to harvest and steal browser information (history, passwords, etc) 26->106 118 2 other signatures 26->118 37 cmd.exe 2 26->37         started        68 192.168.2.1 unknown unknown 30->68 70 prichg.am.files.1drv.com 30->70 72 4 other IPs or domains 30->72 108 Writes to foreign memory regions 30->108 110 Allocates memory in foreign processes 30->110 112 Creates a thread in another existing process (thread injection) 30->112 114 Injects a PE file into a foreign processes 30->114 40 DpiScaling.exe 30->40         started        116 Tries to detect virtualization through RDTSC time measurements 33->116 file14 signatures15 process16 signatures17 92 Tries to harvest and steal browser information (history, passwords, etc) 37->92 42 conhost.exe 37->42         started        94 Modifies the context of a thread in another process (thread injection) 40->94 96 Maps a DLL or memory area into another process 40->96 98 Sample uses process hollowing technique 40->98 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-20 07:58:51 UTC
File Type:
PE (Exe)
Extracted files:
44
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ogehwyp6nqeescqloxaahbfpblvw7wys3z5kutnicgk3fgcro5kq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:modiloader campaign:ab58 persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220620-rgn6fsgaa4/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Formbook Payload
ModiLoader Second Stage
Formbook
ModiLoader, DBatLoader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
0b4b7d7628499c9d0c62562dc64f22baf5390cd32f71e0317c259511ae85b5b6
MD5 hash:
d6e8fb9c9383709a7475144fbc74cb44
SHA1 hash:
3dc32f98eb13d725511b64924730132883ad3591
Link:
https://www.unpac.me/results/ac985356-48ae-4751-ac41-771d87e8cfd7/
SH256 hash:
71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755
MD5 hash:
a5d704e7b5f67ef6ab7e189eec4360ab
SHA1 hash:
764b70bff833db766ec48667ea917ca1e7f79763
Link:
https://www.unpac.me/results/ac985356-48ae-4751-ac41-771d87e8cfd7/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/71887b61fe6c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

FormBook

Executable exe 71887b61fe6c08490a0b75c00384af0aeb6fdb12de7aaa4da81195b298517755

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2221178/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/281647/

Comments